ISSAQUAH, Wash. — A cheese sold recently at Costco Wholesale Corp. outlets in five states has been preliminarily linked to an E. coli outbreak that has sickened 25 people, Costco and federal health officials warned consumers Thursday.

The Bravo Farms Dutch Style Raw Milk Gouda Cheese was offered for sale and for in-store tasting between Oct. 5 and Nov. 1 at Costco stores in Arizona, Colorado, New Mexico, Nevada and the San Diego, Calif., area.

The Issaquah-Wash.-based company said the federal Centers for Disease Control and Prevention reported 25 cases of people sickened by E. coli O157:H7 in those states during that time.

In its own statement, the U.S. Food and Drug Administration said the illnesses include 11 in Arizona, eight in Colorado, three in New Mexico, two in Nevada and one in California.

No deaths have been reported, but nine people were sick enough to be hospitalized, the FDA said. One possible case of hemolytic uremic syndrome, a type of kidney failure, was reported, the agency said.

Consumers should return any remaining Bravo Farms Gouda to Costco for a refund, Costco Assistant Vice President Craig Wilson said. Costco has voluntarily removed the cheese from its stores and used purchase records to notify other consumers.

The FDA, CDC and Costco are working together on the investigation.

The first results of Costco’s own testing were expected Friday, Wilson said in a telephone interview.